%0 Journal Article %A Peter Å emrl %T Two characterizations of automorphisms on B(X) %J Studia Mathematica %D 1993 %P 143-149 %V 105 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-105-2-143-149/ %R 10.4064/sm-105-2-143-149 %G en %F 10_4064_sm_105_2_143_149